hado/core/app/Providers/AppServiceProvider.php

<?php

namespace App\Providers;

use Illuminate\Support\ServiceProvider;

class AppServiceProvider extends ServiceProvider
{
    /**
     * Register any application services.
     */
    public function register(): void
    {
        $this->app->singleton(\App\Scheduling\WindowResolver::class, fn () => new \App\Scheduling\WindowResolver(
            config('hado.fallback_day_minutes'),
            config('hado.fallback_hour_minutes'),
            config('hado.fallback_hours'),
        ));
    }

    /**
     * Bootstrap any application services.
     */
    public function boot(): void
    {
        //
    }
}